I have a SD-35 Sand Dollar 100 lb sand filter. When on "filter" the water is coming out of both ports, thebackwash port and return filter. Seems to work fine on backwash and rinse, only comes out of backwash port. I replaced spider gasket which came with the diverter. The handle on top of filter works fine. Seems to be filtering fine but coming out of both ports. Please help!!! Thank you.
